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狄拉克非线性电动力学的推广和自旋带电粒子

Generalization of Dirac Non-Linear Electrodynamics, and Spinning Charged Particles

W. A. Rodrigues, Jayme Vaz, Erasmo Recami

摘要:

在本文中,我们通过引入两个势(即带有电荷和磁单极子的电磁场理论中的矢量势A和伪矢量势γ ^[5] B),并通过将乘积的伪标量部分设为零(其中ω = A + γ ^[5] B),推广了狄拉克非线性电动力学。omega.omega我们表明,这样的理论的场方程具有一个孤立的解决方案,可以表示先验的“带电粒子”,因为它被赋予了库仑场加上磁偶极子的领域。孤立子的静止能量是有限的,储存在其电磁场中的角动量可以通过带电粒子的自旋来确定--以适当地选择参数。因此,这种方法似乎产生了一个带电(自旋)粒子的经典模型,它不满足以前在同一方向上的尝试所遇到的问题。

英文摘要:

In this note we generalized the Dirac non-linear electrodynamics, by introducing two potentials (namely, the vector potential A and the pseudo-vector potential gamma^5 B of the electromagnetic theory with charges and magnetic monopoles) and by imposing the pseudoscalar part of the product omega.omega* to be zero, with omega = A + gamma^5 B. We show that the field equations of such a theory possess a soliton-like solution which can represent a priori a "charged particle", since it is endowed with a Coulomb field plus the field of a magnetic dipole. The rest energy of the soliton is finite, and the angular momentum stored in its electromagnetic field can be identified --for suitable choices of the parameters-- with the spin of the charged particle. Thus this approach seems to yield a classical model for the charged (spinning) particle, which does not meet the problems met by earlier attempts in the same direction.

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